Sennheiser HD518Sennheiser HD518 Open Back Audiophile Headphones. The HD518 open, circumaural headphones prove that quality and affordability can go hand in hand. These high-end open circumaural headphones use E.A.R. technology for outstanding sonic accuracy and clarity. Sennheiser's innovative "Eargonomic Acoustic Refinement" (E.A.R.) design channels audio signals directly into your ears. State-of-the-art, advanced Duofol diaphragms deliver transparency and minimal distortion, while highly optimised, field-strengthened neodymium ferrous magnet systems yield an excellent dynamic response. A surround reflector in the housing of the HD518 creates an extended spatial sound field for the lightweight aluminium voice coils chosen for high efficiency and excellent dynamics. The special diaphragm geometry in the HD518 from Sennheiser reduces intermodulation distortion, while highly constant, compressed cellulose fleece reduces total harmonic distortion. 
Sennheiser HD518 Features - State of the art Duofol diaphragms for transparency and minimal distortion
- Distinctive grille-like ear cup casing design
- Soft, crackle-free ear pads
- Audiophile headphones prove that quality and affordability can go hand in hand
- E.A.R. technology ensures accurate channeling of audio signals into your ears
Sennheiser HD518 ReviewsTrustedreviews Headphones Of The Year 2011 Award Winner
"These over ear headphones are at the lower end of the Sennheiser's premium range, however they are stylish and well put together. The sound itself is warm, detailed and enveloping, offering quality which rivals headphones twice the price and for that reason it's the winner in this category. " Techradar Honours Sennheiser HD518 with 5 Star Review
"Sennheiser's HD 518s are big, beautifully made and deliver great sound quality for the money. Designed for hi-fi use, the 518s bring audiophile-sound quality to your Mac, iPad or iPhone in a lightweight, open-backed design." 
Technical Specifications- Transducer principle: Dynamic, open
- Ear coupling: Circumaural
- Frequency response: 14 - 26.000Hz
- THD, total harmonic distortion: < 0.2%
- Sound pressure level (SPL): 108dB (1kHz/1Vrms)
- Impedance: 50Ω
- Cable: 3m OFC single-sided, exchangeable
- Jack plug: 6.35mm with 3.5mm adapter
- Weight: 255g
Package Includes - Sennheiser HD518 Open Back Audiophile Headphones
- 3.5mm adapter
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